10. Which of these devices is also referred to as a'key'? a. an electric torch
b. an electric switch
c. a filament d. a dry cell
d. a dry cell

which statements describe the image? check all that apply.the wood is releasing argon gas.this information is useful for dating ancient rock.the process works only with organic matter.the element has a half-life of 5,730 years.this shows the half-life of carbon-19.